Help regarding paypal fees

Help regarding paypal fees

I sold an item for £60 plus 2.95 postage through facebook. Buyer paid 62.95. i only received 60.61 as was charged a fee of 2.34. i am not a dealer or business therefore do not wish to pay fees. thought paypal was free service. buyer wants refund, happy to refund the 60.61 received but paypal is asking me to refund 62.95 which is not what i have received. why should i? why should it cost me ? if buyer used a credit card would this be the charge? any help gratefully received please as paypal resolution centre is rubbish and doesnt answer the questions, it seems it only offers help to the buyer